Liquid or vapor fuel burner



May 15, 11923.

C. O. EVERHART LIQUID OR VAPOR FUEL BURNER Filed Jan. 9 1922 fill Patented Wiley 35, R923.

UhiiTE m him.

CHARLES 0. EVEREAR T, 0F WARREN, PENNSYLVANIA.

LIQUID 0R VAPOR, FUEL BURNER.

Application filed January To all whom. it may concern:

Be it known that I, CHARLES O. Evnruran'r, a citizen of the United States, residin at Warren, in the county of Warren and tate of Pennsylvania, have invented certain new and useful Improvements in Liquid or Vapor Fuel Burners; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it ap erta-ins to make and use the same.

y invention relates to improvements in burners of the type in which a liquid or gaseous fuel is mixed with steam or air under pressure to form a highly combustible mixture, giving intense heat, and one. aim of the invention is to provide for effectively m xing the fuel with the fluid pressure, by directing numerous individual jets of the fuel against the film ofair .or steam.

A further object of the invention is to provide means for leading the fuel to an atomizing device in such a manner that thls fuel will be equally discharged at both the,

upper and lower sides of this atomizing device, even though very low pressure is used in the burner, while the burner is set in a horizontal position.

Yet another object is to provide a novel construction whereby the fuel supply passages leading to the atomizer may e readily cleaned of any deposits which may lodge therein. 7

An additional object is a construction so that the fuel will strike the atomizing agent in a spray; to the'end that there will be per feet vaporization with resultant higher co'm-.

bustion.

With the foregoing and minor obJects in view, the invention resides in the novel subject matter hereinafter described' and claimed, the description being supplemented by the accompanying drawings.

Figure 1 is a top plan view of a burner constructed in accordance with my invention.

Figure 2 is a central longitudinal sectional view.

Figure 3 is a vertical transverse sectlon on line 3-3 of Fig. 2.

Figure 4 is an end elevation of the atomizing device.

In the drawings above briefly described, I have shown a cylindrical burner casing 1 formed of front and rear telescopicsecticns 2 and 3 respectively, which may be 9, 1922. Serial No. 528,059.

relatively adjusted by means of a rod 4 and hand operated nut 5. The front end of the front casing section 2 is provided with a forwardly tapered frusto-conical flange 6 and within this flange, in spaced relation therewith, is a frusto-conical valve body or head 7 which tapers forwardly and is provided in its front side with a central recess 8 whose wall is preferably flared as shown at 9. The rear end of the head 7 is provided with a central boss 10 having radiating spider arms 11 which contact slidably with the inner side of the casing section 2. The head 7 is carried by the front end of a tube 12 which is threaded into and extends rigidly from the closed rear end 13 of the casing. iVithin this tube, a stem 14 is snugly received, the front end of said stem carrying a frusto-conical, rearwardly tapered fuel atomizer 15 whose periphery is provided with a multiplicity of alternate ribs and grooves as indicated at 16. The rear end of the stem 14- passes through a suitable stufling box' 17 carried by the rear end wall 13 of the casing 1 and has a threaded connection 18 therewith so that by rotating said stem by means of a suitable handle 19, the spaced relation between the atomizer 15 and the flared wall 9 of the recess 8, may be adjusted. The end wall 13 is provided with-a. fuel passage 20 and the stem 14- is formed with longitudinal grooves 21 which preferably extend helically around the same in opposite directions as shown, said grooves leading from the passage 20 into the upper and lower sides of the recess 8, so as to carry the fuel to said recess in such a manner as to permit it to be equally discharged around the atomizer 15. At suitable points, the casing 1 is provided with relatively low and high fluid pressure inlets 22 and 23 respectively, either one or both of which may be used. For instance, when the burner is used in connection with a boiler, low pressure air created by a. suitable fan. may be supplied to the casing 1 through the low pressure air inlet 22 and will serve to mix with the fuel as it discharges from the atomizer 15, so that steam pressure may be obtained in the boiler. This having been done, steam may be led from the boiler to the high pressure inlet 23 and thereafter used in place of air.

It will be observed that regardless of the fluid pressure used, it will be discharged through the space between the flange 6 and the body 7 in a cone-like sheet and the fuel lid will be discharged against this sheet in a plurality of jets from the atomizer 15, thereby insuringthorough mixing of the fuel with the fluid pressure to insure the best results. Whenever desired, the space between the flange G and the head 7 may be adjusted by means of the nut 5 and by turning stem 18, the space between the atomizer and the wall 9 may be varied as the case may require.

Furthermore, in case the grooves 21 becomeis required on the fuel feeding into the burner and the latter may thus be made to suit any degree of pressure on the fuel, even as low as ordinary gravity, and with no back pressure on the fuel by the air or steam.

Since excellent results have been obtained from the details disclosed. they are preferably followed, but within the scope of the invention as claimed, numerous minor changes may be made.

I claim:

1. A burner comprising a casing having a fluid pressure inlet, the front end of said casing being open and having a frusto-conical forwardly tapered flange, the rear end of said body being closed, a frusto-conical head within and in closely spaced relation with said flange, the front end of said head having a central recess, a peripherally grooved atomizer mounted in said recess and increasing in size toward its front end to spray a multiplicity of fuel jets into the fluid pressure discharged between said flange and head, and a fuel supply tube discharging into said recess.

2. A burner comprising a casing having a fluid pressure inlet, the front end of said casing being open and having a frusto-conical forwardly tapered flange, the rear end of said body being closed, a frusto-conical head within and in closely spaced relation with said flange, the front end of said head having a central recess, a peripherally grooved atomizer mounted in said recess and increasing in size toward its front end to spray a multiplicity of fuel jets into the fluid pressure discharged between said flange and head, and a fuel discharge tube extending rigidly from the closed end of said casing and carrying said head, said tube discharging into said recess.

3. A burner comprising a casing having a fluid pressure inlet, the front end of said casing being open and the rear end thereof being closed, a head within and spaced from said open endof the casing, the front end of said head having a recess, a tube extending rigidly from the closed end of said casing and carrying said head, an atomizer in said recess, and a movable stem snugly received in said tube, carrying said atomizer and extending through the closed end of the casing, the closed end of said casing being provided with a fuel passage and said stem having longitudinal grooves leading from said passage to said recess.

4. A burner of the type specified embodying a nozzle including spaced frusto-conical members between whichfluid is adapted to pass, one of said members being adjustable to vary said space and being formed in its outer end with a socket into which fuel is delivered, and a distributing and atoinizing element adjustably arranged in said socket, the periphery of said element being bevelled and formed with transverse grooves, and a portion of the wall of said socket being bevelled to extend in spaced parallelism with the periphery of the atomizer.

'5. A burner of the type specified embodying a nozzle including a substantially frustoconical head having a socket formed in its apex, a tube through which the fuel passes, said tube communicating with the bottom of said socket, a stem rotatable and slidable in said tube, said stem fitting rather snugly within the tube and having s irally arranged fuel-grooves formed in its surface, the ends of the grooves adjacent said sockets being disposed at substantially diametrically opposite points to equally feed the fuel into said socket, and a distributing member secured on the end of the stem extending into said socket, the peripheral portion of said member being grooved and spaced from the wall of the socket to permit it to function as an atomizer.

In testimony whereof I have hereunto set my hand.

\ CHARLES O. EVlaRHART. 

